I intend to send Christmass card to my users in my album. But How to send to many user in one time? It means we can send to them without do again the same work. Send 1 ecard to many people. How to solve?
Such a feature doesn't exist out-of-the-box. Check the mods board, or write a regular email to your users. The dev team does not create mods that result in mass-mails.